Hi everyone. I have a problem whenever my mommie gives Sydney my sister a hug i get really jealous. One time i was on the couch with mommie and she was rubbing my belly ,Sydney came over and gave mommie a hug and i started to bark, yell,and even try to push Sydney off the couch. Sydney gets really mad and she doesn't talk to me sometimes after that. I will go and look at her and she will feel bad and come back to play and she will sit by mommie again and i will start to bark or try to push her off again. Any suggestions as to how I can help myself?.!